Why does it take so long to get Windows 10 update?

Windows 10’s May 2020 Update is finally here. However, it may take several weeks (or even months!) before Windows Update offers the update on your system. “Why does it take so long?” many of my customers have asked.

The main reason that Microsoft rolls out these updates slowly, and to a limited number of PCs at first, is because it needs to test how the roll out is going. If there are suddenly blue screens, performance bugs or other problems, Microsoft can “pause” the roll out and fix the bugs before resuming it.

Therefore, if the update has not appeared in Windows Update on your PC yet, it’s probably because Microsoft isn’t yet confident that it will work perfectly with your PC.